151545021242 has 8 divisors (see below), whose sum is σ = 227319286836. Its totient is φ = 75771925632.

The previous prime is 151545021233. The next prime is 151545021247. The reversal of 151545021242 is 242120545151.

It can be written as a sum of positive squares in 2 ways, for example, as 145747569361 + 5797451881 = 381769^2 + 76141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 151545021199 and 151545021208.

It is not an unprimeable number, because it can be changed into a prime (151545021247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191498 + ... + 582890.

Almost surely, 2^151545021242 is an apocalyptic number.

151545021242 is a deficient number, since it is larger than the sum of its proper divisors (75774265594).

151545021242 is a wasteful number, since it uses less digits than its factorization.

151545021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584992.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 151545021242 its reverse (242120545151), we get a palindrome (393665566393).

The spelling of 151545021242 in words is "one hundred fifty-one billion, five hundred forty-five million, twenty-one thousand, two hundred forty-two".